Frame and cassette filter

Abstract

With respect to the task of creating a frame for holding a filter element, the frame being easy to install following the inexpensive production thereof, a frame for receiving a filter element, comprising four wall elements ( 1, 2 ), which rest against one another on installation edges ( 3, 4 ) and form a peripheral wall ( 5 ), is characterized in that two wall elements ( 1, 2 ), respectively, are configured identically. Furthermore a cassette filter is provided.

1 . A frame for receiving a filter element, comprising four wall elements, which rest against one another on installation edges and form a peripheral wall, characterized in that two wall elements, respectively, are configured identically. 
   
   
       2 . The frame according to  claim 1 , characterized in that on the installation edges means for fixing and connecting the wall elements, are configured. 
   
   
       3 . The frame according to  claim 1 , characterized in that on the installation edges, means for latching the wall elements, are configured. 
   
   
       4 . The frame according to  claim 2 , characterized in that two wall elements, respectively, comprise detent lugs, and two wall elements, respectively, comprise holders for the detent lugs. 
   
   
       5 . A frame according to  claim 1 , characterized in that insertion tapers are provided on the wall elements. 
   
   
       6 . A frame according to  claim 1 , characterized in that reinforcing ribs are associated with the wall elements. 
   
   
       7 . A frame according to  claim 1 , characterized in that installation handles are disposed on at least two wall elements. 
   
   
       8 . A frame according to  claim 1 , characterized in that retaining bars are provided on at least two wall elements. 
   
   
       9 . A frame according to  claim 1 , characterized in that the wall elements comprise strips protruding from the wall. 
   
   
       10 . The frame according to  claim 9 , characterized in that the strips have a U-profile, are hollow, and comprise concave stabilizing bars. 
   
   
       11 . The frame according to  claim 9 , characterized in that the strips form a head frame. 
   
   
       12 . A frame according to  claim 1 , characterized in that the wall elements are configured as injection-molded parts. 
   
   
       13 . A cassette filter, comprising a frame according to  claim 1  and a filter element held by the frame.